

MCQOPTIONS
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1. |
1: A connection had long been suspected P: since both were at their worst in the Q: same regions and seasons, but the nature R: between the abundance of mosquitoes S: and the occurrence of mosquitoes 6: of this connection had not been understood. |
A. | RQSP |
B. | RSQP |
C. | RSPQ |
D. | PQRS |
Answer» D. PQRS | |